Battery State of Charge / Discharge
Chart showing specific gravity and cell voltage for states of charge and discharge of lead-acid industrial battery.
Electrolyte Specific Gravity and corresponding Cell Voltage for various states of charge / discharge.
|
State of Charge / Discharge |
Specific Gravity of Electrolyte |
Cell Voltage |
|
Fully Charged |
1.260 to 1.300 |
2.10 to 2.13 volts - no load |
|
75% Charged / |
1.230 to 1.250 |
|
|
50% Charged / |
1.200 to 1.220 |
2.01 volts - no load |
|
25% Charged / |
1.170 to 1.190 |
|
|
20% Charged / |
1.140 to 1.160 |
1.93 volts - no load |
|
Discharged |
1.110 to 1.130 |
1.75 volts - no load |





